117 lines
2.9 KiB
C++
117 lines
2.9 KiB
C++
#include "Window.hpp"
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// -------- OpenGL -------- //
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#define GLEW_STATIC
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#include <GL/glew.h>
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#include "WindowContext.hpp"
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// -------- Canvas -------- //
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#define NANOVG_GL3_IMPLEMENTATION
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#include <nanovg.h>
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#include <nanovg_gl.h>
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namespace tp {
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class Graphics::Canvas::Context {
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public:
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NVGcontext* vg;
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};
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}
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using namespace tp;
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Graphics::Canvas::Canvas() { mContext = new Context(); }
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Graphics::Canvas::~Canvas() { delete mContext; }
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void Graphics::Canvas::init() {
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mContext->vg = nvgCreateGL3(NVG_ANTIALIAS | NVG_STENCIL_STROKES);
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if (nvgCreateFont(mContext->vg, "default", "Font.ttf") == -1) {
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// TODO
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}
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}
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void Graphics::Canvas::deinit() { nvgDeleteGL3(mContext->vg); }
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RectF Graphics::Canvas::getAvaliableArea() { return { (halnf) 0, (halnf) 0, mWidth, mHeight }; }
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void Graphics::Canvas::rect(const RectF& rec, const RGBA& col, halnf round) {
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nvgBeginPath(mContext->vg);
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if (round == 0) {
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nvgRect(mContext->vg, rec.x, rec.y, rec.z, rec.w);
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} else {
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nvgRoundedRect(mContext->vg, rec.x, rec.y, rec.z, rec.w, round);
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}
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nvgFillColor(mContext->vg, { col.r, col.g, col.b, col.a });
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nvgFill(mContext->vg);
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}
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void Graphics::Canvas::pushClamp(const RectF& rec) {
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RectF intersection = rec;
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if (mScissors.size()) {
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mScissors.last().calcIntersection(rec, intersection);
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}
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nvgScissor(mContext->vg, intersection.x, intersection.y, intersection.z, intersection.w);
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mScissors.append(rec);
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}
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void Graphics::Canvas::popClamp() {
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DEBUG_ASSERT(mScissors.size());
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mIsClamping = false;
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mScissors.pop();
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if (mScissors.size()) {
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const auto& rec = mScissors.last();
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nvgScissor(mContext->vg, rec.x, rec.y, rec.z, rec.w);
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} else {
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nvgResetScissor(mContext->vg);
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}
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}
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void Graphics::Canvas::text(
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const String& string, const RectF& aRec, halnf size, Align align, halnf marging, const RGBA& col
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) {
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RectF rec = { aRec.x + marging, aRec.y + marging, aRec.z - marging * 2, aRec.w - marging * 2 };
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pushClamp(rec);
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nvgFontSize(mContext->vg, size);
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nvgFontFace(mContext->vg, "default");
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nvgFillColor(mContext->vg, { col.r, col.g, col.b, col.a });
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float centerX = rec.x;
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float centerY = rec.y;
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int alignNVG = 0;
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if (((int1*) &align)[1] == 0x00) { // center x
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alignNVG |= NVG_ALIGN_CENTER;
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centerX += rec.z * 0.5f;
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} else if (((int1*) &align)[1] == 0x01) { // left x
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alignNVG |= NVG_ALIGN_LEFT;
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} else if (((int1*) &align)[1] == 0x02) { // right x
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alignNVG |= NVG_ALIGN_RIGHT;
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centerX += rec.z;
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}
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if (((int1*) &align)[0] == 0x00) { // center y
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alignNVG |= NVG_ALIGN_MIDDLE;
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centerY += rec.w * 0.5f;
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} else if (((int1*) &align)[0] == 0x01) { // top y
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alignNVG |= NVG_ALIGN_TOP;
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centerY += rec.w;
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} else if (((int1*) &align)[0] == 0x02) { // bottom y
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alignNVG |= NVG_ALIGN_BOTTOM;
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}
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nvgTextAlign(mContext->vg, alignNVG);
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nvgText(mContext->vg, centerX, centerY, string.read(), nullptr);
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popClamp();
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}
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void Graphics::Canvas::proc() { nvgBeginFrame(mContext->vg, mWidth, mHeight, 1.0); }
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void Graphics::Canvas::draw() { nvgEndFrame(mContext->vg); }
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